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Fundamental factors affecting thermonuclear ignition

Baolian Cheng, Paul A. Bradley, Sean M. Finnegan, Cliff A. Thomas2021年被引用 7Nuclear FusionIF 3出版社

Recent inertial confinement fusion experiments on the National Ignition Facility (NIF) have improved performance and interpretability. These results help us address hydrodynamic efficiency, pusher adiabat, tamping, and hot-spot confinement as they pertain to criteria for ignition. We present requirements for propagating burn that are stringent compared to existing literature. The effects of the pusher adiabat on the energy partition for the cold and hot DT are addressed, as well as the persistent discrepancy between the observed and simulated neutron down scattering ratio. The required energy for achieving ignition on NIF and paths forward to optimize or increase the capsule yields for given laser energy are also discussed.

日本語訳

近年の国立点火施設(NIF)における慣性核融合実験は、性能と解釈可能性を向上させている。これらの結果は、点火の基準に関連する流体力学効率、プッシャーの断熱指数、タンピング、およびホットスポット閉じ込めに対処する上で役立つ。我々は、既存の文献と比較して厳格な伝播燃焼の要件を提示する。冷たいDTと高温DTのエネルギー配分に対するプッシャーの断熱指数の影響、ならびに観測された中性子下方散乱比とシミュレーションによる中性子下方散乱比との間の持続的な不一致について論じる。NIFで点火を達成するために必要なエネルギーと、与えられたレーザーエネルギーに対するカプセル収量を最適化または増加させるための今後の道筋についても議論する。

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